How To Clear Mac Memory


Optimized Storage helps you save storage space space by storing your content in iCloud and making it available on demand:

Clear RAM with Memory Cleaner Use the special app to free up RAM on Mac – Memory Cleaner. Memory Cleaner is ABSOLUTELY FREE and allows you to automatically clean up inactive memory and speed up your Mac. Follow these steps to clear RAM with Memory Cleaner. MemoryClean 2 from Fiplab is super easy to use. Once downloaded, this app will purge your Mac's inactive memory. Select the MemoryClean Icon from your top Apple menu bar.

  • When storage space is needed, files, photos, movies, email attachments, and other files that you seldom use are stored in iCloud automatically.
  • Each file stays right where you last saved it, and downloads when you open it.
  • Files that you’ve used recently remain on your Mac, along with optimized versions of your photos.

If you haven't yet upgraded to macOS Sierra or later, learn about other ways to free up storage space.

  • Typically, a Mac low on memory warning occurs when there are memory-intensive processes that are taking up lots of RAM resources, not storage space. Since Your computer is low on memory is initially a legitimate system warning, hackers aim to misuse it in order to trick people to overlook their following actions.
  • Find hidden junk, large old folders, background apps, and heavy memory consumers. Use CleanMyMac X to free up space on your Mac and tune it for maximum speed.
  • Remove Login Items to Lower Mac Memory Usage. Login items are the ones that load.

Find out how much storage is available on your Mac

Choose Apple menu  > About This Mac, then click Storage. Each segment of the bar is an estimate of the storage space used by a category of files. Move your pointer over each segment for more detail.

Click the Manage button to open the Storage Management window, pictured below.

Manage storage on your Mac

The Storage Management window offers recommendations for optimizing your storage. If some recommendations are already turned on, you will see fewer recommendations.

Store in iCloud

Click the Store in iCloud button, then choose from these options:

  • Desktop and Documents. Store all files from these two locations in iCloud Drive. When storage space is needed, only the files you recently opened are kept on your Mac, so that you can easily work offline. Files stored only in iCloud show a download icon , which you can double-click to download the original file. Learn more about this feature.
  • Photos. Store all original, full-resolution photos and videos in iCloud Photos. When storage space is needed, only space-saving (optimized) versions of photos are kept on your Mac. To download the original photo or video, just open it.
  • Messages. Store all messages and attachments in iCloud. When storage space is needed, only the messages and attachments you recently opened are kept on your Mac. Learn more about Messages in iCloud.

Storing files in iCloud uses the storage space in your iCloud storage plan. If you reach or exceed your iCloud storage limit, you can either buy more iCloud storage or make more iCloud storage available. iCloud storage starts at 50GB for $0.99 (USD) a month, and you can purchase additional storage directly from your Apple device. Learn more about prices in your region.

Optimize Storage

Click the Optimize button to save space by automatically removing watched movies and TV shows. When storage space is needed, movies or TV shows that you purchased from Apple and already watched are removed from your Mac. Click the download icon next to a movie or TV show to download it again.

Your Mac will also save space by keeping only recent email attachments on this Mac when storage space is needed. You can manually download any attachments at any time by opening the email or attachment, or saving the attachment to your Mac.

How To Free Up Memory On Computer

Optimizing storage for movies, TV shows, and email attachments doesn't require iCloud storage space.

Empty Trash Automatically

Empty Trash Automatically permanently deletes files that have been in the Trash for more than 30 days.

Reduce Clutter

Reduce Clutter helps you identify large files and files you might no longer need. Click the Review Files button, then choose any of the file categories in the sidebar, such as Applications, Documents, Music Creation, or Trash.

You can delete the files in some categories directly from this window. Other categories show the total storage space used by the files in each app. You can then open the app and decide whether to delete files from within it.

Learn how to redownload apps, music, movies, TV shows, and books.

Where to find the settings for each feature

The button for each recommendation in the Storage Management window affects one or more settings in other apps. You can also control those settings directly within each app.

  • If you're using macOS Catalina or later, choose Apple menu  > System Preferences, click Apple ID, then select iCloud in the sidebar: Store in iCloud turns on the Optimize Mac Storage setting on the right. To turn off iCloud Drive entirely, deselect iCloud Drive.
  • If you're using macOS Mojave or earlier, choose Apple menu > System Preferences, click iCloud, then click Options next to iCloud Drive. Store in iCloud turns on the Desktop & Documents Folders and Optimize Mac Storage settings.
  • In Photos, choose Photos > Preferences, then click iCloud. Store in iCloud selects iCloud Photos and Optimize Mac Storage.
  • In Messages, choose Messages > Preferences, then click iMessage. Store in iCloud selects Enable Messages in iCloud.
  • If you're using macOS Catalina or later, open the Apple TV app, choose TV > Preferences from the menu bar, then click Files. Optimize Storage selects “Automatically delete watched movies and TV shows.”
  • In you're using macOS Mojave or earlier, open iTunes, choose iTunes > Preferences from the menu bar, then click Advanced. Optimize Storage selects “Automatically delete watched movies and TV shows.”
  • In Mail, choose Mail > Preferences from the menu bar, then click Accounts. In the Account Information section on the right, Optimize Storage sets the Download Attachments menu to either Recent or None.

Empty Trash Automatically: From the Finder, choose Finder > Preferences, then click Advanced. Empty Trash Automatically selects “Remove items from the Trash after 30 days.”

Other ways that macOS helps automatically save space

With macOS Sierra or later, your Mac automatically takes these additional steps to save storage space:

  • Detects duplicate downloads in Safari, keeping only the most recent version of the download
  • Reminds you to delete used app installers
  • Removes old fonts, languages, and dictionaries that aren't being used
  • Clears caches, logs, and other unnecessary data when storage space is needed

How to free up storage space manually

Even without using the Optimized Storage features described in this article, you can take other steps to make more storage space available:

  • Music, movies, and other media can use a lot of storage space. Learn how to delete music, movies, and TV shows from your device.
  • Delete other files that you no longer need by moving them to the Trash, then emptying the Trash. The Downloads folder is good place to look for files that you might no longer need.
  • Move files to an external storage device.
  • Compress files.
  • Delete unneeded email: In the Mail app, choose Mailbox > Erase Junk Mail. If you no longer need the email in your Trash mailbox, choose Mailbox > Erase Deleted Items.
How To Clear Mac Memory

Learn more

  • The Storage pane of About This Mac is the best way to determine the amount of storage space available on your Mac. Disk Utility and other apps might show storage categories such as Not Mounted, VM, Recovery, Other Volumes, Free, or Purgeable. Don't rely on these categories to understand how to free up storage space or how much storage space is available for your data.
  • When you duplicate a file on an APFS-formatted volume, that file doesn't use additional storage space on the volume. Deleting a duplicate file frees up only the space required by any data you might have added to the duplicate. If you no longer need any copies of the file, you can recover all of the storage space by deleting both the duplicate and the original file.
  • If you're using a pro app and Optimize Mac Storage, learn how to make sure that your projects are always on your Mac and able to access their files.

How To Clear Mac Application Memory

Somehow, your Mac is getting slow. After clicking on the app, you have to wait for a while before it pops up. The Inactive memory is used by recently active and apps. Mac keeps it reserved in case you want to open the program again. What if there is no enough memory for these behaviors? Then you will encounter the situation as we mentioned at the beginning of this article. Before it pops up, why not read this and follow the tips to free up your Mac memory? After this, you may have a good performance for your Mac. Here is how you can clear RAM on Mac.

How to free up Mac memory manually?

1. Open launchpad and Find the Activity Monitor

How To Clear Up Mac Memory

2. Check the details from the Monitor

3. Choose to close the unwanted app & activity

How to free up Mac memory in an easier Way?

Obviously, it is pretty inconvenient if you try to free up the memory as you have to close them one by one. Why not do it in a simple and automatic way? Published by IObit, world's top system utility and security software provider since 2004, MacBoostercomes with the feature to free up and optimize your Mac memory. Here is how you can do it with MacBooster easily:

1: Download MacBooster 7 and open it

2: Go to the Memory Clean module

3: Choose Clean to let MacBooster optimize autumnally

4: Or choose details and close the app manually

It targets to speed up your Mac by releasing memory. It presents both Free and Used memory information. Once clicking the Clean button at the bottom center part of the window, you will get more available memory to start your applications faster. However, you are not recommended to release it frequently.

How to clear cached memory mac

Clicking the Details button guides you to an intuitive memory usage window where you can quickly find out the processes that occupy high memory and close them to boost your Mac performance.


We hope that this article will help you to free up more memory for your Mac. Then you can enjoy a faster performance from your Mac. MacBooster can always get it done in just one click. What’s more, it comes with other useful functions, like system junk files removal (remove over 20 types of junk files), Virus & Malware Scan, Startup optimization, Duplicate finder, Photo sweeper, etc. You can always use it to get your Mac tide and safe. So there you have it. Just try it now and speed up your Mac easily!

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